Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSINFINITI2002Q45 V8-4.5L (VK45DE)REPAIR AND DIAGNOSISMAINTENANCEALIGNMENTSERVICE AND REPAIRFRONT
2002 Infiniti Q45 V8-4.5L (VK45DE)
Front
2002 Infiniti Q45 V8-4.5L (VK45DE)SECTION Front
FRONT WHEEL ALIGNMENT
Before checking front wheel alignment, be sure to make a preliminary inspection (Unladen*).
*: Fuel, radiator coolant and engine oil full. Spare tire, jack, hand tools and mats in designated positions.
PRELIMINARY INSPECTION
1. Check tires for wear and improper inflation.
2. Check wheels for deformation, cracks and other damage. If deformed, remove wheel and check wheel runout.
a. Remove tire from aluminum wheel and mount on a tire balance machine.
b. Set dial indicator as shown in the illustration.
Wheel runout (Dial indicator value)
3. Check wheel bearings for looseness.
4. Check suspension for looseness.
5. Check steering linkage for looseness.
6. Check that shock absorbers work properly.
7. Check vehicle posture (Unladen).
Camber, Caster and Kingpin Inclination
^ Camber, caster and kingpin inclination are preset at factory and cannot be adjusted.
1. Measure camber, caster and kingpin inclination of both right and left wheels with a suitable alignment gauge.
Camber, Caster and Kingpin inclination
2. If camber, caster and kingpin inclination are not within specification, inspect and replace any damaged or worn front suspension parts
Toe-In Inspection
Measure toe-in using following procedure. If out of specification, inspect and replace any damaged or worn front suspension parts.
WARNING:
^ Always perform the following procedure on a flat surface.
^ Make sure that no person is in front of the vehicle before pushing it.
1. Bounce front of vehicle up and down to stabilize the posture.
2. Push the vehicle straight ahead about 5 m (16 ft).
3. Put a mark on base line of tread (rear side) of both tires at the same height as hub center. These are measuring points.
4. Measure distance "A" (rear side).
5. Push the vehicle slowly ahead to rotate the wheels 180° (1/2 turn).
^ If the wheels have rotated more than 180 degrees (1/2 turn), try the above procedure again from the beginning. Never push vehicle backward.
6. Measure distance "B" (front side).
7. Adjust toe-in by varying the length of steering tie-rods.
a. Loosen lock nuts.
b. Adjust toe-in by screwing tie-rods in and out.
Standard length "L"
c. Tighten lock nuts to specified torque.
Before checking front wheel alignment, be sure to make a preliminary inspection (Unladen*).
*: Fuel, radiator coolant and engine oil full. Spare tire, jack, hand tools and mats in designated positions.
PRELIMINARY INSPECTION
1. Check tires for wear and improper inflation.
2. Check wheels for deformation, cracks and other damage. If deformed, remove wheel and check wheel runout.
a. Remove tire from aluminum wheel and mount on a tire balance machine.
b. Set dial indicator as shown in the illustration.
Wheel runout (Dial indicator value)
3. Check wheel bearings for looseness.
4. Check suspension for looseness.
5. Check steering linkage for looseness.
6. Check that shock absorbers work properly.
7. Check vehicle posture (Unladen).
Camber, Caster and Kingpin Inclination
^ Camber, caster and kingpin inclination are preset at factory and cannot be adjusted.
1. Measure camber, caster and kingpin inclination of both right and left wheels with a suitable alignment gauge.
Camber, Caster and Kingpin inclination
2. If camber, caster and kingpin inclination are not within specification, inspect and replace any damaged or worn front suspension parts
Toe-In Inspection
Measure toe-in using following procedure. If out of specification, inspect and replace any damaged or worn front suspension parts.
WARNING:
^ Always perform the following procedure on a flat surface.
^ Make sure that no person is in front of the vehicle before pushing it.
1. Bounce front of vehicle up and down to stabilize the posture.
2. Push the vehicle straight ahead about 5 m (16 ft).
3. Put a mark on base line of tread (rear side) of both tires at the same height as hub center. These are measuring points.
4. Measure distance "A" (rear side).
5. Push the vehicle slowly ahead to rotate the wheels 180° (1/2 turn).
^ If the wheels have rotated more than 180 degrees (1/2 turn), try the above procedure again from the beginning. Never push vehicle backward.
6. Measure distance "B" (front side).
7. Adjust toe-in by varying the length of steering tie-rods.
a. Loosen lock nuts.
b. Adjust toe-in by screwing tie-rods in and out.
Standard length "L"
c. Tighten lock nuts to specified torque.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.